Pharmaceutical companies are just one part of the jigsaw. The net is much wider.
Greater sales are driven by market demand.
Ferring Pharmaceuticals state their focus is on reproductive medicine and maternal health, gastroenterology, urology, microbiome and early stage development.
It would not be appropriate to suggest ulterior motives to any company supporting political parties, without evidence. Drugs used to block puberty in gender nedicine are used in fertility treatments such as IVF, which would seem to me to be the more significant market for them.